/* ===== Reset & Base ===== */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --blue: #0092ca;
  --blue-light: #33b5e5;
  --blue-glow: rgba(0, 146, 202, 0.15);
  --pink: #f21368;
  --pink-light: #ff4d94;
  --pink-glow: rgba(242, 19, 104, 0.12);
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-section: #111820;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-heading: #f0f6fc;
  --border: #21262d;
  --border-light: #30363d;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px var(--blue-glow);
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif,
    "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--blue-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--pink-light);
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Hero ===== */

.hero {
  text-align: center;
  padding: 120px 24px 80px;
  background: linear-gradient(180deg, #0d1117 0%, #111820 50%, #0d1117 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
  pointer-events: none;
}

.wordmark {
  font-size: clamp(3.5rem, 10vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  position: relative;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-light) 40%, var(--pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  margin-top: 20px;
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
  position: relative;
}

/* ===== Divider ===== */

.section-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
  margin: 0;
}

/* ===== Sections ===== */

.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* ===== Mission ===== */

.mission {
  padding: 72px 24px;
  background-color: var(--bg-section);
  text-align: center;
}

.mission-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.mission-content p {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 700px;
  text-align: center;
}

.mission-content em {
  font-style: italic;
  color: var(--text);
}

.founder {
  font-size: 0.95rem;
  color: var(--text-muted);
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: inline-block;
  text-align: center;
}

.founder a {
  font-weight: 600;
  color: var(--blue-light);
}

.founder a:hover {
  color: var(--pink-light);
}

/* ===== Ventures ===== */

.ventures {
  padding: 72px 24px;
  background-color: var(--bg);
  text-align: center;
}

.ventures-dropdown {
  text-align: center;
}

.ventures-toggle {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: border-color var(--transition), background var(--transition);
}

.ventures-toggle::-webkit-details-marker {
  display: none;
}

.ventures-toggle:hover {
  border-color: var(--border-light);
  background: var(--bg-section);
}

.ventures-toggle .section-heading {
  margin-bottom: 0;
}

.toggle-hint {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.toggle-chevron {
  color: var(--text-muted);
  transition: transform var(--transition);
  margin-top: 4px;
}

.ventures-dropdown[open] .toggle-chevron {
  transform: rotate(180deg);
}

.ventures-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}

.venture-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.venture-card:hover {
  box-shadow: var(--shadow-hover), var(--shadow-glow);
  transform: translateY(-3px);
  border-color: var(--border-light);
  color: inherit;
}

.venture-card-accent {
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--pink));
}

.venture-card-body {
  padding: 28px 28px 24px;
}

.venture-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.venture-description {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.venture-link {
  display: inline-block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--blue-light);
  padding: 6px 16px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.venture-card:hover .venture-link {
  color: var(--pink-light);
  border-color: var(--pink);
  background: var(--pink-glow);
}

/* ===== Footer ===== */

.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  background-color: var(--bg-section);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--blue-light);
}

/* ===== Responsive ===== */

@media (min-width: 768px) {
  .hero {
    padding: 160px 24px 120px;
  }

  .hero::before {
    width: 900px;
    height: 900px;
  }

  .mission,
  .ventures {
    padding: 96px 24px;
  }

  .ventures-grid {
    max-width: 600px;
  }

  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}